| 1. Connect a crosspiece (+) - a conclusion of the battery to a conclusion 2, and (-) - a conclusion – with the electric motor case (fig. the Scheme for check of rotation of the electric motor of a screen wiper with small speed see). The electric motor should rotate with small speed. |
| 2. Connect (+) - a conclusion of the battery to a conclusion 1, and (-) - a conclusion – with the electric motor case. The electric motor should rotate with a great speed. |
| 3. Start the electric motor with small speed, and disconnect a crosspiece from a conclusion 2 in any position except a self-locking device. Connect conclusions 2 and 3 and запитайте a conclusion 4 (concerning the case). The electric motor should be disconnected in a self-locking device position (fig. the Scheme of check of switching-off of the electric motor in self-locking device position see). |
| 4. If results this checks negative the electric motor replace. |